./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.12.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f6fb2bb1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/b.12.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-f6fb2bb [2019-11-19 19:55:30,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 19:55:30,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 19:55:30,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 19:55:30,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 19:55:30,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 19:55:30,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 19:55:30,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 19:55:30,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 19:55:30,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 19:55:30,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 19:55:30,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 19:55:30,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 19:55:30,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 19:55:30,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 19:55:30,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 19:55:30,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 19:55:30,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 19:55:30,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 19:55:30,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 19:55:30,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 19:55:30,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 19:55:30,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 19:55:30,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 19:55:30,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 19:55:30,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 19:55:30,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 19:55:30,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 19:55:30,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 19:55:30,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 19:55:30,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 19:55:30,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 19:55:30,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 19:55:30,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 19:55:30,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 19:55:30,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 19:55:30,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 19:55:30,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 19:55:30,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 19:55:30,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 19:55:30,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 19:55:30,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-19 19:55:30,359 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 19:55:30,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 19:55:30,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 19:55:30,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 19:55:30,362 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 19:55:30,362 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 19:55:30,363 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 19:55:30,363 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 19:55:30,363 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 19:55:30,363 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 19:55:30,365 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 19:55:30,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 19:55:30,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 19:55:30,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 19:55:30,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 19:55:30,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 19:55:30,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 19:55:30,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 19:55:30,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 19:55:30,369 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 19:55:30,369 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 19:55:30,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 19:55:30,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 19:55:30,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 19:55:30,373 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 19:55:30,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 19:55:30,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 19:55:30,374 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 19:55:30,376 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 19:55:30,376 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff [2019-11-19 19:55:30,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 19:55:30,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 19:55:30,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 19:55:30,710 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 19:55:30,711 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 19:55:30,712 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.12.c [2019-11-19 19:55:30,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e3491ea/4f330247911c4beaab442c72e87eb86c/FLAG7f0500098 [2019-11-19 19:55:31,229 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 19:55:31,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.12.c [2019-11-19 19:55:31,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e3491ea/4f330247911c4beaab442c72e87eb86c/FLAG7f0500098 [2019-11-19 19:55:31,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e3491ea/4f330247911c4beaab442c72e87eb86c [2019-11-19 19:55:31,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 19:55:31,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 19:55:31,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 19:55:31,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 19:55:31,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 19:55:31,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:31,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b882689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31, skipping insertion in model container [2019-11-19 19:55:31,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:31,675 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 19:55:31,695 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 19:55:31,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:55:31,870 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 19:55:31,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:55:31,902 INFO L192 MainTranslator]: Completed translation [2019-11-19 19:55:31,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31 WrapperNode [2019-11-19 19:55:31,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 19:55:31,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 19:55:31,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 19:55:31,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 19:55:31,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:31,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:32,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 19:55:32,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 19:55:32,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 19:55:32,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 19:55:32,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:32,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:32,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:32,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:32,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:32,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:32,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (1/1) ... [2019-11-19 19:55:32,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 19:55:32,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 19:55:32,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 19:55:32,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 19:55:32,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 19:55:32,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 19:55:32,197 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 19:55:32,198 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-19 19:55:32,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:32 BoogieIcfgContainer [2019-11-19 19:55:32,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 19:55:32,199 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 19:55:32,199 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 19:55:32,202 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 19:55:32,203 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 19:55:32,203 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:55:31" (1/3) ... [2019-11-19 19:55:32,204 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@764464f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:55:32, skipping insertion in model container [2019-11-19 19:55:32,204 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 19:55:32,204 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:31" (2/3) ... [2019-11-19 19:55:32,205 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@764464f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:55:32, skipping insertion in model container [2019-11-19 19:55:32,205 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 19:55:32,205 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:32" (3/3) ... [2019-11-19 19:55:32,206 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.12.c [2019-11-19 19:55:32,245 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 19:55:32,246 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 19:55:32,246 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 19:55:32,246 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 19:55:32,246 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 19:55:32,246 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 19:55:32,246 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 19:55:32,246 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 19:55:32,257 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-19 19:55:32,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 19:55:32,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 19:55:32,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 19:55:32,282 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 19:55:32,282 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 19:55:32,282 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 19:55:32,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-19 19:55:32,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 19:55:32,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 19:55:32,284 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 19:55:32,284 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 19:55:32,284 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 19:55:32,290 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L15-2true [2019-11-19 19:55:32,290 INFO L796 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~x~0 > 0 || main_~y~0 > 0); 6#L12true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 8#L15-2true [2019-11-19 19:55:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:32,295 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-19 19:55:32,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:32,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187311962] [2019-11-19 19:55:32,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:32,389 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:32,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:32,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-19 19:55:32,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:32,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362714721] [2019-11-19 19:55:32,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:32,405 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:32,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:32,407 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-19 19:55:32,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:32,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629818143] [2019-11-19 19:55:32,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:32,422 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:32,522 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:32,524 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:32,524 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:32,524 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:32,525 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 19:55:32,525 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:32,526 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:32,532 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:32,532 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration1_Loop [2019-11-19 19:55:32,532 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:32,533 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:32,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:32,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:32,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:32,696 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:32,697 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:32,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:32,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 19:55:32,722 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 19:55:32,722 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:32,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:32,730 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 19:55:32,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 19:55:32,736 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:32,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:32,743 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:32,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 19:55:32,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 19:55:32,775 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 19:55:32,778 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:32,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:32,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:32,778 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:32,779 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 19:55:32,779 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:32,779 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:32,780 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:32,780 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration1_Loop [2019-11-19 19:55:32,780 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:32,780 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:32,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:32,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:32,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:32,877 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:32,882 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:32,896 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 19:55:32,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:32,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:32,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:32,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:32,905 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 19:55:32,906 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 19:55:32,912 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:32,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 19:55:32,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:32,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:32,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:32,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:32,948 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 19:55:32,949 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:32,955 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:32,978 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 19:55:32,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:32,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 19:55:32,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:32,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:32,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:32,986 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 19:55:32,987 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:32,991 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 19:55:32,996 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 19:55:32,996 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:33,014 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 19:55:33,014 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 19:55:33,014 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 19:55:33,015 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-19 19:55:33,022 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:33,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 19:55:33,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:33,105 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 19:55:33,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:55:33,127 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-19 19:55:33,128 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-19 19:55:33,180 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2019-11-19 19:55:33,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 19:55:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 19:55:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-19 19:55:33,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-19 19:55:33,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:33,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-19 19:55:33,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:33,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-19 19:55:33,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:33,187 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2019-11-19 19:55:33,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 19:55:33,194 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2019-11-19 19:55:33,195 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-19 19:55:33,195 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-19 19:55:33,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2019-11-19 19:55:33,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 19:55:33,197 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-11-19 19:55:33,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2019-11-19 19:55:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-19 19:55:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-19 19:55:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-11-19 19:55:33,226 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-19 19:55:33,227 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-19 19:55:33,227 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 19:55:33,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-11-19 19:55:33,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 19:55:33,228 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 19:55:33,228 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 19:55:33,228 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-19 19:55:33,228 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 19:55:33,229 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 68#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2019-11-19 19:55:33,229 INFO L796 eck$LassoCheckResult]: Loop: 69#L12 assume !(main_~x~0 > 0); 63#L15 assume main_~y~0 > 0;main_~y~0 := main_~y~0 - 1; 64#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2019-11-19 19:55:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:33,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-19 19:55:33,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:33,230 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101175902] [2019-11-19 19:55:33,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:33,243 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:33,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:33,244 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-11-19 19:55:33,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:33,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128090247] [2019-11-19 19:55:33,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:33,256 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:33,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:33,256 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-11-19 19:55:33,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:33,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832974309] [2019-11-19 19:55:33,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:33,269 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:33,307 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:33,307 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:33,307 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:33,307 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:33,308 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 19:55:33,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:33,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:33,308 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration2_Loop [2019-11-19 19:55:33,308 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:33,308 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:33,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:33,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:33,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:33,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:33,381 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:33,381 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:33,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:33,394 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,400 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 19:55:33,401 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:33,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 19:55:33,414 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 19:55:33,414 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:33,431 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 19:55:33,444 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 19:55:33,492 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 19:55:33,496 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:33,496 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:33,496 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:33,497 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:33,497 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 19:55:33,497 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,497 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:33,497 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:33,497 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration2_Loop [2019-11-19 19:55:33,497 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:33,498 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:33,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:33,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:33,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:33,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:33,577 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:33,577 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:33,589 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 19:55:33,592 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:33,592 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:33,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:33,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:33,602 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 19:55:33,603 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,608 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:33,620 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 19:55:33,625 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:33,625 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:33,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:33,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:33,631 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 19:55:33,633 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,644 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,658 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 19:55:33,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:33,661 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 19:55:33,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:33,661 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:33,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:33,663 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 19:55:33,663 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 19:55:33,668 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 19:55:33,674 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 19:55:33,674 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:33,692 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 19:55:33,693 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 19:55:33,693 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 19:55:33,693 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-19 19:55:33,696 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:33,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 19:55:33,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:33,748 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 19:55:33,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:55:33,797 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-19 19:55:33,797 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-19 19:55:33,830 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2019-11-19 19:55:33,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 19:55:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 19:55:33,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-11-19 19:55:33,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-19 19:55:33,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:33,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-19 19:55:33,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:33,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-19 19:55:33,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:33,834 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2019-11-19 19:55:33,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 19:55:33,838 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2019-11-19 19:55:33,838 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-19 19:55:33,839 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-19 19:55:33,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2019-11-19 19:55:33,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 19:55:33,839 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-11-19 19:55:33,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2019-11-19 19:55:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-11-19 19:55:33,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-19 19:55:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2019-11-19 19:55:33,848 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-11-19 19:55:33,848 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-11-19 19:55:33,849 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 19:55:33,849 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2019-11-19 19:55:33,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 19:55:33,851 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 19:55:33,852 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 19:55:33,853 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 19:55:33,853 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 19:55:33,854 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 153#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 163#L12 assume !(main_~x~0 > 0); 147#L15 [2019-11-19 19:55:33,854 INFO L796 eck$LassoCheckResult]: Loop: 147#L15 assume !(main_~y~0 > 0); 148#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 154#L12 assume !(main_~x~0 > 0); 147#L15 [2019-11-19 19:55:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:33,858 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-19 19:55:33,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:33,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084385643] [2019-11-19 19:55:33,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:33,879 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:33,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:33,880 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-11-19 19:55:33,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:33,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635220167] [2019-11-19 19:55:33,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:55:33,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635220167] [2019-11-19 19:55:33,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:55:33,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 19:55:33,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131706882] [2019-11-19 19:55:33,928 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-19 19:55:33,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:55:33,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 19:55:33,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 19:55:33,935 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-19 19:55:33,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:55:33,974 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2019-11-19 19:55:33,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 19:55:33,975 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2019-11-19 19:55:33,976 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 19:55:33,976 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-11-19 19:55:33,977 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 19:55:33,977 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 19:55:33,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 19:55:33,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 19:55:33,977 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 19:55:33,977 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 19:55:33,978 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 19:55:33,978 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 19:55:33,978 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 19:55:33,978 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 19:55:33,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 19:55:33,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:55:33 BoogieIcfgContainer [2019-11-19 19:55:33,987 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 19:55:33,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 19:55:33,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 19:55:33,988 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 19:55:33,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:32" (3/4) ... [2019-11-19 19:55:33,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 19:55:33,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 19:55:33,999 INFO L168 Benchmark]: Toolchain (without parser) took 2338.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 957.7 MB in the beginning and 929.6 MB in the end (delta: 28.1 MB). Peak memory consumption was 165.4 MB. Max. memory is 11.5 GB. [2019-11-19 19:55:34,001 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:55:34,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.45 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 19:55:34,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-19 19:55:34,010 INFO L168 Benchmark]: Boogie Preprocessor took 16.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:55:34,011 INFO L168 Benchmark]: RCFGBuilder took 180.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-19 19:55:34,012 INFO L168 Benchmark]: BuchiAutomizer took 1788.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 929.6 MB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 11.5 GB. [2019-11-19 19:55:34,013 INFO L168 Benchmark]: Witness Printer took 7.08 ms. Allocated memory is still 1.2 GB. Free memory is still 929.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:55:34,029 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 244.45 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 97.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 180.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1788.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 929.6 MB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 11.5 GB. * Witness Printer took 7.08 ms. Allocated memory is still 1.2 GB. Free memory is still 929.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 16 SDslu, 11 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...